Family/Spouse: Piers DE GAVESTON. Piers (son of Arnaud DE GABASTON and Claramonde DE MARSAN) was born about 1284 in Gascony; died on 19 Jun 1312 in executed - Blacklow Hill, Warwick; was buried on 02 Jan 1314 in Church of the Friars Preachers. [Group Sheet] [Family Chart]